The article discusses the development of artificial ground freezing as an aid to tunnelling construction in unconsolidated strata particularly when below ground water table. Strata types and the depth to be reached determines the most suitable method of placing the freezing tubes in an accurate pattern. Standard equipment uses two-stage or boosted compressors capable of reducing brine temperature to -40 deg C. An alternative refrigerant, liquid nitrogen, which evaporates at -196 deg C can deal with ground freezing operations more easily although costs can be prohibitive except for works of short duration. Details are given of a number of tunnelling projects in which ground freezing techniques were used. (TRRL)

  • Availability:
  • Corporate Authors:

    Morgan-Grampian (Professional Press) Limited

    Morgan-Grampian House, Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • HARRIS, J
  • Publication Date: 1980-5

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00319689
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Feb 6 1981 12:00AM